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Redefining Personal Knowledge Management

Don't Just Keep

Knowledge without recalling.

Evolve with

Intelligence Geometry .

Stop Collecting Dots.

Start Connecting Constellations.

Turn Static Notes

Into Dynamic Intelligence.

OntoNotes.ai is the most advanced PKM tool integrated with Knowledge Graphs and Generative AI. Your biological brain forgets 90% of what it consumes—let your digital brain remember, connect, and execute everything for you.

Integrated with Generative AI
The Problem

The 90% Memory Trap

Why your brain betrays you—and what to do about it

THE FORGETTING CURVE
1 2 3 4 Days 5 6 7 100% 80% 60% Retention 40% 20%
The Forgetting Curve

Why do you keep digging for exactly what you already found?

You read books, watch insightful videos, and study tirelessly. But the Ebbinghaus Forgetting Curve proves that without reinforcement, your brain sheds 90% of that information, keeping only the 10% you needed in that moment.

Months later, you have a vague recollection—a ghost of an idea—but the details are gone. You're forced to dig back through history, re-reading and re-watching just to reclaim what you once owned.

The Solution

Your Digital Second Brain

Stop filing. Start connecting. Let AI do the heavy lifting.

AI-Generated Graph
The Digital Extension

Stop Filing. Start Connecting.

Manual knowledge graphs are powerful, but tedious to maintain. OntoNotes.ai uses Generative AI to do the heavy lifting.

It's not just a storage bin; it's a literal extension of your biological brain. It helps you visualize what you know, retrieve it instantly, and plan your next breakthrough.

Who Is It For

Built for people who think deeply

Students, Writers, Analysts, Researchers, and Entrepreneurs — OntoNotes helps each group capture, connect, and turn ideas into output.

Coursework and life together

Keep lectures, readings, and assignments connected so nothing slips through. One system to learn, think, and submit on time.

The Trinity of Productivity

One Platform. Complete Cognitive Cycle.

From chaotic input to executed output.

OntoGraph

Visualize & Reference

Upload your documents and files, and watch as AI generates a stunning 3D Knowledge Graph for you.

"AI isn't perfect, but our Highlight & Drag-Drop feature makes it effortless to refine nodes and link back to your exact source."

OntoSheets

Synthesize & Plan

The alchemist's table. Mix knowledge from diverse sources to discover hidden links and new opportunities.

  • Perfect for deep Research & Thesis
  • Connect disparate ideas
  • Create Tasks directly from insights

OntoPlan

Execute & Track

Where planning becomes reality. Gather tasks from OntoSheets or assign personal goals.

  • Unified Calendar Summary
  • Kanban Prioritization
  • Track Progress & Closures
See It In Action

Feature Showcase

Hover over any card to see the feature in action

Effortless 2D Node Creation

Drag, drop, and connect your ideas visually in seconds.

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OntoGraph 2D

Build knowledge nodes with intuitive drag-and-drop interactions.

Immersive 3D Knowledge Graph

Rotate and explore your knowledge in stunning 3D space.

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OntoGraph 3D

Experience your interconnected ideas from every angle in stunning 3D.

Smart Grouping & Linking

Organize notes into groups and draw connections between ideas.

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OntoSheets

Visual brainstorming with powerful grouping and linking tools.

Intuitive Task Assignment

Drag tasks onto your calendar and track progress effortlessly.

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OntoPlan

Seamless task management with spatial calendar integration.

AI-Powered Actions

Chat with Olle to retrieve, plan, and execute—all in one place.

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Olle Intelligence

Your proactive AI companion that understands and acts on your behalf.

Personalized Themes

Switch themes instantly to match your mood and workflow.

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Dynamic Theming

Beautiful themes that adapt to complement your day and workflow.

Proactive Intelligence

Meet Olle

Your AI companion that retrieves, plans, and executes alongside you.

Your Cognitive Orchestrator

More Than a Chatbot

Olle isn't just a chatbot that retrieves answers. Olle is your proactive agent that stays with you from the first spark of an idea to the final checklist item.

  • Retrieve Instantly: "Where did I read about neural plasticity?" Olle finds the exact paragraph in your PDFs.
  • Plan Strategically: "Draft a 4-week study plan based on these notes." Olle builds the roadmap in OntoPlan.
  • Execute Together: Olle tracks your progress, nudging you on overdue tasks and suggesting the next step.
The Tetris Effect

Loved by Thinkers

Users report seeing connections everywhere after just one week.

"OntoNotes.ai makes my notes feel alive."

Sarah
Sarah Jenkins
PhD Candidate

"System design visualization is a game changer."

Marcus
Marcus Cole
Senior Engineer

"Finally, a tool that understands my ADHD brain."

Alex
Alex Rivera
Creative Director

"3D view found a thesis contradiction I missed."

James
James Thorne
Researcher

"Like Wikipedia for my brain. Ideas structure themselves."

Lisa
Lisa Wright
Writer

"AI suggestions found thesis sources I missed."

Mei
Megan Lane
PhD Student

"Code visualization is revolutionary."

Jun
Justin West
CS Student

"Historical timelines with thematic links? Magic."

Priya
Julia Roberts
History Major

"Navigating case law without lost tabs."

David
David Smith
Law Student

"Mapping protein interactions is finally intuitive."

Aiko
Alice Johnson
Biology Researcher

"CAD for my concepts and spatial design."

Wei
William Clark
Architect

"Connecting sources and events is so much faster."

Sofia
Sofia Rodriguez
Journalist

"The way it visualizes data clusters helped me spot anomalies instantly."

Liam
Liam White
Data Analyst

"Building my literature review graph was incredibly satisfying."

Christina
Christina Xander
Researcher

"Perfect for tracking dependencies in large codebases."

Henry
Henry Young
Developer

"OntoNotes.ai makes my notes feel alive."

Sarah
Sarah Jenkins
PhD Candidate

"Obsidian integration made research effortless."

Michael
Michael Stern
Academic

"Visualizing trends revealed hidden insights."

Elena
Elena Rodriguez
Market Analyst

"A true extension of my curiosity."

Thomas
Thomas Wright
Founder

"Multi-hop reasoning is a tireless assistant."

Sophia
Sophia Peterson
Data Scientist

"Beautiful UI. The future of note-taking."

Chloe
Chloe Bennett
Designer

"Visualizing systems saved my finals."

Kenji
Kevin Stolz
Medical Student

"Tracing literary motifs is now beautiful."

Liam
Liam O'Connor
Literature Student

"Keeps game lore and quests consistent."

Yuki
Yvonne Stone
Game Developer

"Transit and zoning networks changed our proposal."

Fiona
Fiona Foster
Urban Planner

"Surprisingly great for music theory."

Lucas
Lucas Silva
Musician

"Great for visualizing psychology connections."

Emma
Emma Wilson
Psychology Student

"Roadmaps and research in one brain."

Rahul
Robert Powell
Startup Founder
Ready for Access

All-In-One Platform.
Wait No More.

OntoNotes.ai is ready for you. Reclaim the 90% you've forgotten.

Join 10,000+ thinkers who have moved beyond folders.
Your second brain is waiting.

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